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View article: Combined In‐Solution and On‐Surface Synthesis of a Fully Fused Cross‐Shaped Phthalocyanine Pentamer
Combined In‐Solution and On‐Surface Synthesis of a Fully Fused Cross‐Shaped Phthalocyanine Pentamer Open
Phthalocyanines (Pcs) are a class of technologically relevant tetrapyrrolic macrocycles that offer rich photophysical properties as well as excellent tunability by means of chemical functionalization. Among such functionalization strategie…
View article: Elucidating the Role of NaCl in the on‐Surface Synthesis of Conjugated Azaacene Polymers on Au(111)
Elucidating the Role of NaCl in the on‐Surface Synthesis of Conjugated Azaacene Polymers on Au(111) Open
On‐surface synthesis (OSS) offers unique opportunities for fabricating carbon‐based nanostructures that are unattainable by conventional wet‐chemical synthesis. Despite OSS being extremely successful, the use of coadsorbates to promote rea…
View article: Electron Spin Resonance at the Single‐Molecule Scale
Electron Spin Resonance at the Single‐Molecule Scale Open
Electron spin resonance (ESR) is a widely employed spectroscopic technique for studying systems with unpaired electron spins, such as molecular radicals. Typically, many billions of spins are required to get a detectable ESR signal, which …
View article: A molecule with half-Möbius topology
A molecule with half-Möbius topology Open
Stereoisomers of C$_{13}$Cl$_2$ exhibiting helical orbitals around a ring of carbon atoms were synthesized by atom manipulation on NaCl surfaces. We resolved the enantiomeric geometries of the closed-shell singlet states by atomic force mi…
View article: Roadmap on atomically-engineered quantum platforms
Roadmap on atomically-engineered quantum platforms Open
Matter at the atomic-scale is inherently governed by the laws of quantum mechanics. This makes charges and spins confined to individual atoms—and interactions among them—an invaluable resource for fundamental research and quantum technolog…
View article: Probing Molecular Properties at Atomic Length Scale Using Charge-State Control
Probing Molecular Properties at Atomic Length Scale Using Charge-State Control Open
The charge state plays a critical role in governing the structural, electronic, and chemical properties of molecules. Controlling the charge state of individual molecules provides a powerful tool for exploring fundamental processes, such a…
View article: Substrate Polarization Alters the Jahn-Teller Effect in a Single Molecule
Substrate Polarization Alters the Jahn-Teller Effect in a Single Molecule Open
Charge-state transitions of a single Cu-phthalocyanine molecule adsorbed on an insulating layer of NaCl on Cu(111) are probed by means of alternate charging scanning tunneling microscopy. Real-space imaging of the electronic transitions re…
View article: Distance and Voltage Dependence of Orbital Density Imaging Using a CO-Functionalized Tip in Scanning Tunneling Microscopy
Distance and Voltage Dependence of Orbital Density Imaging Using a CO-Functionalized Tip in Scanning Tunneling Microscopy Open
The appearance of frontier molecular ion resonances measured with scanning tunneling microscopy (STM)─often referred to as orbital density images─of single molecules was investigated using a CO-functionalized tip in dependence on bias volt…
View article: Combined In‐Solution and On‐Surface Synthesis of a Fully Fused Cross‐Shaped Phthalocyanine Pentamer
Combined In‐Solution and On‐Surface Synthesis of a Fully Fused Cross‐Shaped Phthalocyanine Pentamer Open
Phthalocyanines (Pcs) are a class of technologically relevant tetrapyrrolic macrocycles that offer rich photophysical properties as well as excellent tunability by means of chemical functionalization. Among such functionalization strategie…
View article: Real-space investigation of polarons in hematite Fe <sub>2</sub> O <sub>3</sub>
Real-space investigation of polarons in hematite Fe <sub>2</sub> O <sub>3</sub> Open
In polarizable materials, electronic charge carriers interact with the surrounding ions, leading to quasiparticle behavior. The resulting polarons play a central role in many materials properties including electrical transport, interaction…
View article: Substrate stabilization of Jahn-Teller distortion in a single molecule
Substrate stabilization of Jahn-Teller distortion in a single molecule Open
Charge-state transitions of a single Cu-phthalocyanine molecule adsorbed on an insulating layer of NaCl on Cu(111) are probed by means of alternate charging scanning tunneling microscopy. Real-space imaging of the electronic transitions re…
View article: Ultrafast atomic-scale scanning tunnelling spectroscopy of a single vacancy in a monolayer crystal
Ultrafast atomic-scale scanning tunnelling spectroscopy of a single vacancy in a monolayer crystal Open
Defects in atomically thin semiconductors and their moiré heterostructures have emerged as a unique testbed for quantum science. Strong light–matter coupling, large spin–orbit interaction and enhanced Coulomb correlations facilitate a spin…
View article: Single-molecule electron spin resonance by means of atomic force microscopy
Single-molecule electron spin resonance by means of atomic force microscopy Open
Understanding and controlling decoherence in open quantum systems is of fundamental interest in science, whereas achieving long coherence times is critical for quantum information processing 1 . Although great progress was made for individ…
View article: Data for "Charge-state lifetimes of single molecules on few-monolayer-thin insulating films"
Data for "Charge-state lifetimes of single molecules on few-monolayer-thin insulating films" Open
Data for: Charge-state lifetimes of single molecules on few-monolayer-thin insulating films
View article: Data for "Charge-state lifetimes of single molecules on few-monolayer-thin insulating films"
Data for "Charge-state lifetimes of single molecules on few-monolayer-thin insulating films" Open
Data for: Charge-state lifetimes of single molecules on few-monolayer-thin insulating films
View article: Real-space investigation of polarons in hematite Fe2O3
Real-space investigation of polarons in hematite Fe2O3 Open
In polarizable materials, electronic charge carriers interact with the surrounding ions, leading to quasiparticle behaviour. The resulting polarons play a central role in many materials properties including electrical transport, optical pr…
View article: Atomic-scale access to long spin coherence in single molecules with scanning force microscopy
Atomic-scale access to long spin coherence in single molecules with scanning force microscopy Open
Understanding and controlling decoherence in open quantum systems is of fundamental interest in science, while achieving long coherence times is critical for quantum information processing. Although great progress was made for individual, …
View article: Charge-state lifetimes of single molecules on ultrathin insulating films
Charge-state lifetimes of single molecules on ultrathin insulating films Open
In scanning tunneling microscopy (STM) experiments of molecules on insulating films, tunneling through molecular resonances implies transiently charging the molecule. The transition back to the charge ground state by tunneling through the …
View article: Selectivity in single-molecule reactions by tip-induced redox chemistry
Selectivity in single-molecule reactions by tip-induced redox chemistry Open
Controlling selectivity of reactions is a quest in chemistry. Here, we demonstrate reversible and selective bond formation and dissociation promoted by tip-induced reduction-oxidation reactions on a surface. Molecular rearrangements leadin…
View article: Selectivity in single-molecule reactions by tip-induced redox chemistry
Selectivity in single-molecule reactions by tip-induced redox chemistry Open
Controlling selectivity of reactions is an ongoing quest in chemistry. In this work, we demonstrate reversible and selective bond formation and dissociation promoted by tip-induced reduction-oxidation reactions on a surface. Molecular rear…
View article: Interplay of boundary states of graphene nanoribbons with a Kondo impurity
Interplay of boundary states of graphene nanoribbons with a Kondo impurity Open
We investigate the interplay of two highly localized, nearly degenerate electronic states, namely, a zero-energy edge mode in a graphene nanoribbon on the one hand and an Abrikosov-Suhl resonance located at a Kondo impurity on the other. O…
View article: On-Surface Synthesis of Polypyridine: Strain Enforces Extended Linear Chains
On-Surface Synthesis of Polypyridine: Strain Enforces Extended Linear Chains Open
Strain-induced on-surface transformations provide an appealing route to steer the selectivity towards desired products. Here, we demonstrate the selective on-surface synthesis of extended all-trans poly(2,6-pyridine) chains on Au(111). By …
View article: Exploiting Cooperative Catalysis for the On‐Surface Synthesis of Linear Heteroaromatic Polymers via Selective C–H Activation
Exploiting Cooperative Catalysis for the On‐Surface Synthesis of Linear Heteroaromatic Polymers via Selective C–H Activation Open
Regiospecific C−H activation is a promising approach to achieve extended polymers with tailored structures. While a recent on‐surface synthetic approach has enabled regioselective homocoupling of heteroaromatic molecules, only small oligom…
View article: Imaging Charge Localization in a Conjugated Oligophenylene
Imaging Charge Localization in a Conjugated Oligophenylene Open
Polaron formation in conjugated polymers has a major impact on their optical and electronic properties. In polyphenylene, the molecular conformation is determined by a delicate interplay between electron delocalization and steric effects. …
View article: Vibronic response of a spin-1/2 state from a carbon impurity in two-dimensional WS2
Vibronic response of a spin-1/2 state from a carbon impurity in two-dimensional WS2 Open
We demonstrate the creation of a spin-1/2 state via the atomically controlled generation of magnetic carbon radical ions (CRIs) in synthetic two-dimensional transition metal dichalcogenides. Hydrogenated carbon impurities located at chalco…